考虑运行均匀性的含源配电网可靠性分析.DOCVIP

考虑运行均匀性的含源配电网可靠性分析 祁彦鹏1，王枫2，王点点3 （1.国网天津市电力公司经济技术研究院，天津 300171；2.国网上海市电力公司市南供电公司，上海 200233；3.上海对外经贸大学会计学院，上海 201620） Reliability Analysis of Distribution System with DG Considering Operation Homogeneity Qi Yanpeng1, Wang Feng2, Wang Diandian3 (1. Economic Research Institute of State Grid Tianjin Electric Power Company, Tianjin 300171; 2. South Power Supply Company of State Grid Shanghai Municipal Electric Power Company, Shanghai 200233; 3. Accounting School of Shanghai University of International Business and Economics, Shanghai 201620) ABSTRACT: Operation homogeneity is a basic state property of distribution system with DG. It is related to the active power of bus and DG in the distribution system with DG. Load, network and element parameters are the influencing factors too. High reliability supply for power users is a very important feature of distribution system with DG, and it is the material basis for the high satisfaction of power users. In this paper, the operation homogeneity index, reliability index and the looses which is the characteristic of economy are calculated and analyzed based on the modified IEEE-33 system. The results show that these reliability indexs demand bigger DG active power, while these homogeneity indexs, security index, economy indexs needing moderate DG active power. Operation and planning department will decide the operation scheme in practical work. KEY WORDS: distribution system with DG; operation homogeneity; reliability 摘要：运行均匀性是含源配电网的一项基本状态属性，涉及母线出力、DG发电容量、负荷大小与分布、网络结构、设备参数等多种因素。供电高可靠性是含源配电网的一项基本特征，也是用户高满意度的物质基础。本文结合改进的IEEE-33节点系统，对运行均匀性指标、可靠性指标以及表征经济性的线损进行了分析计算。算例结果表明系统的可靠性要求DG出力越大越好，而系统运行的均匀度、安全性与经济性则要求寻求最佳DG出力值。实际运行中如何侧重，还需要运行规划部门统筹综合考量。 关键词：含源配电网；运行均匀性；可靠性 引言 具备高度成熟的配电自动化技术，且含有高渗透率的分布式电源（DG）和储能装置，以供电高可靠性、用户高满意度为特征的智能配电网是未来配电系统的发展趋势[1-4]，而初步实现配电自动化的含源配电网是其过渡形式。目前，这种具有初步智能化的含源配电网已得到越来越多的实际应用。 在实际运行中，因馈线长短不同、参数不一而导致的网络结构不平衡，以及由负荷特性差异、分布不均而引起的电源与负荷在时间、空间、数量上的不协调等问题依然存在。这将直接导致含源配电网的运行不均匀性[5-9]。 含源配电网的供电可靠性对电力用户有着极其重要的影响。过去的统计资